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Credit Quality And Allowance For Credit Losses (Aging Analysis Of Loans) (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | $ 201 | $ 218
Nonaccrual Loans |  | 226 | 178
Current Loans |  | 51,423 | 51,717
Total loans |  | 51,850 | 52,113
30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 172 | 161
60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 18 | 37
90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 11 | 20
Business loans: | Commercial borrower |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 153 | 155
Nonaccrual Loans |  | 177 | 138
Current Loans |  | 47,386 | 47,636
Total loans |  | 47,716 | 47,929
Business loans: | Commercial borrower | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 134 | 109
Business loans: | Commercial borrower | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 11 | 26
Business loans: | Commercial borrower | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 8 | 20
Business loans: | Commercial borrower | Domestic |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 82 | 72
Nonaccrual Loans |  | 94 | 75
Current Loans |  | 26,937 | 27,104
Total loans |  | 27,113 | 27,251
Business loans: | Commercial borrower | Domestic | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 69 | 48
Business loans: | Commercial borrower | Domestic | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 8 | 14
Business loans: | Commercial borrower | Domestic | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 5 | 10
Business loans: | Commercial borrower | International |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 1
Nonaccrual Loans |  | 13 | 20
Current Loans |  | 1,074 | 1,081
Total loans |  | 1,087 | 1,102
Business loans: | Commercial borrower | International | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Business loans: | Commercial borrower | International | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Business loans: | Commercial borrower | International | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 1
Business loans: | Commercial borrower | Real estate construction: | Domestic |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 18 | 3
Nonaccrual Loans |  | 0 | 2
Current Loans |  | 4,536 | 5,078
Total loans |  | 4,554 | 5,083
Business loans: | Commercial borrower | Real estate construction: | Domestic | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 18 | 3
Business loans: | Commercial borrower | Real estate construction: | Domestic | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Nonaccrual Loans | [1] | 0 | 0
Current Loans | [1] | 4,230 | 4,570
Total loans | [1] | 4,230 | 4,570
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 18 | 3
Nonaccrual Loans | [2] | 0 | 2
Current Loans | [2] | 306 | 508
Total loans | [2] | 324 | 513
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 18 | 3
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 0 | 0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 0 | 0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 48 | 75
Nonaccrual Loans |  | 69 | 41
Current Loans |  | 14,039 | 13,570
Total loans |  | 14,156 | 13,686
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 42 | 54
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 3 | 12
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 3 | 9
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 9 | 5
Nonaccrual Loans | [1] | 18 | 18
Current Loans | [1] | 5,339 | 4,704
Total loans | [1] | 5,366 | 4,727
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 9 | 5
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [1] | 0 | 0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 39 | 70
Nonaccrual Loans | [2] | 51 | 23
Current Loans | [2] | 8,700 | 8,866
Total loans | [2] | 8,790 | 8,959
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 33 | 49
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 3 | 12
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing | [2] | 3 | 9
Business loans: | Commercial borrower | Lease financing | Domestic |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 5 | 4
Nonaccrual Loans |  | 1 | 0
Current Loans |  | 800 | 803
Total loans |  | 806 | 807
Business loans: | Commercial borrower | Lease financing | Domestic | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 5 | 4
Business loans: | Commercial borrower | Lease financing | Domestic | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Business loans: | Commercial borrower | Lease financing | Domestic | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Retail loans: |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 48 | 63
Nonaccrual Loans |  | 49 | 40
Current Loans |  | 4,037 | 4,081
Total loans |  | 4,134 | 4,184
Retail loans: | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 38 | 52
Retail loans: | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 7 | 11
Retail loans: | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 3 | 0
Retail loans: | Residential mortgage |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 29 | 16
Nonaccrual Loans |  | 23 | 19
Current Loans |  | 1,844 | 1,854
Total loans |  | 1,896 | 1,889
Retail loans: | Residential mortgage | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 26 | 10
Retail loans: | Residential mortgage | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 3 | 6
Retail loans: | Residential mortgage | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 0 | 0
Retail loans: | Consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 19 | 47
Nonaccrual Loans |  | 26 | 21
Current Loans |  | 2,193 | 2,227
Total loans |  | 2,238 | 2,295
Retail loans: | Consumer | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 12 | 42
Retail loans: | Consumer | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 4 | 5
Retail loans: | Consumer | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 3 | 0
Retail loans: | Consumer | Home equity |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 15 | 16
Nonaccrual Loans |  | 26 | 21
Current Loans |  | 1,733 | 1,755
Total loans |  | 1,774 | 1,792
Retail loans: | Consumer | Home equity | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 11 | 11
Retail loans: | Consumer | Home equity | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 2 | 5
Retail loans: | Consumer | Home equity | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 2 | 0
Retail loans: | Consumer | Other consumer |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 4 | 31
Nonaccrual Loans |  | 0 | 0
Current Loans |  | 460 | 472
Total loans |  | 464 | 503
Retail loans: | Consumer | Other consumer | 30-59 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 1 | 31
Retail loans: | Consumer | Other consumer | 60-89 Days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | 2 | 0
Retail loans: | Consumer | Other consumer | 90 Days or More |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans Past Due and Still Accruing |  | $ 1 | $ 0
[1] | Primarily loans to real estate developers.
[2] | Primarily loans secured by owner-occupied real estate.

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